It's possible. [he agrees; it's entirely possible that unlike what happened in his own world, mankind continued a downward spiral that didn't stop after the extinction of the humpback whale. that they didn't recognize they needed to stop before it was too late.] But it doesn't say how they made it to the new system of planets they populate now. We're nine hundred years after Earth, and if what we found in the library is anything to go by they created the jump drive after they ended up on these new planets.

[he exhales, pinches the bridge of his nose because he's been over this with his crew and it still makes no sense.]

I'm sorry. [he says after a moment, and smiles tiredly at her.] This probably isn't making any sense.